Malicious PDF — malware analysis report

Static analysis result for SHA-256 accdc4275a226ec5…

MALICIOUS

PDF

38.8 KB Created: 2020-10-24 15:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 4869c20ae546b06b26c1de467a8a4a91 SHA-1: 395a5536eb59cbc4ecb8e23871aab8d2e99ca552 SHA-256: accdc4275a226ec5a1ddae08c91d3ebc17e5ca6c53e9494b20b38041fc71af37
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to link farms and a known malicious redirector. The primary malicious URL, https://ggtraff.ru/123?keyword=feliz+navidad+lyrics+and+chords+pdf, is designed to lure users into clicking through to potentially malicious content. The document body, though heavily obfuscated, contains references to the malicious URL and other links, suggesting a coordinated effort to drive traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/123?keyword=feliz+navidad+lyrics+and+chords+pdf In PDF document text
    • https://pasuzexogisinib.weebly.com/uploads/1/3/4/2/134266431/rugazaxaname_suvolejelekuj.pdfIn PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/9144894.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lulodegoner.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/nelitop-lerunolalikowu-gisawedutijifuf-mepaxinawewulex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/kavitokolezub/misegototuruxukelaveb.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/37622312093.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/bridge_to_terabithia_chapter_3.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/72510214659.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/ap_sachivalayam_digital_assistant_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7486/6337/files/uconn_club_swimming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8881/7562/files/bukesizugevakoloremotig.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/beckhoff_plc_programming.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/richard_bandler_portugues.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/85113585731.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/21360038589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4295/4651/files/tavakukuworedakiduwidet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/dark_souls_1_pyromancer_leveling_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/daily_thanthi_news_paper_today_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/new_car_delivery_checklist.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004bde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BDE 5116 bytes
SHA-256: 149fab285e70c9aab96a0d5cdd68609612eef364a9b44273824245ac447aad52
font_01_sfnt_off00005d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D43 9872 bytes
SHA-256: cd47f459c8edb4d377d9d33927f4ed9ed024d16fbe49c1815432809aa7b08c7b
font_02_sfnt_off00007e1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1A 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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